<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <title>canvas合成图</title>
    <link rel="stylesheet" href="index.css">
</head>

<body>
    <div id="box">
        <img src="./images/img1.png" alt="图片加载中">
        <img src="./images/img2.png" alt="图片加载中">
        <img src="./images/img3.png" alt="图片加载中">
        <img src="./images/img4.png" alt="图片加载中">
    </div>
    <div id="concat">
        <button id="concatBtn" type="button">点击合成</button>
    </div>
</body>
<script type="text/javascript" src="index.js"></script>

</html>